<template>
  <div class="city-group">
    <van-index-bar :sticky="false" :index-list="indexList">
      <van-index-anchor index="热门" />
      <div class="list">
        <template v-for="(city, index1) in groupData.hotCities" :key="index1">
          <div class="city" @click="cityClick(city)">{{ city.cityName }}</div>
        </template>
      </div>

      <template v-for="(group, index2) in groupData.cities" :key="index2">
        <van-index-anchor :index="group.group" />
        <template v-for="(city, index3) in group.cities" :key="index3">
            <van-cell :title="city.cityName" @click="cityClick(city)" />
        </template>
      </template>
    </van-index-bar>  
  </div>
</template>

<script setup>
import useCityStore from "@/stores/modules/city"
import { computed } from "vue"
import { useRouter } from "vue-router"

// 定义props
const props = defineProps({
  groupData: {
    type: Object,
    default: () => ({})
  }
})

// 动态的索引
const indexList = computed(() => {
    const list =  props.groupData.cities.map(item => item.group)
    list.unshift("#")
    return list 
})

// 监听城市的点击
const router = useRouter()
const cityStore = useCityStore()
const cityClick = (city) => {
    // 选中当前城市
    // console.log(city)
    cityStore.currentCity = city
    // 返回上一级
    router.back()
}
</script>

<style lang="less" scoped>
.list{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  padding: 10px;
  padding-right: 25px;
  .city{
    width: 70px;
    height: 28px;
    border-radius: 14px;
    font-size: 12px;
    color: #000;
    text-align: center;
    line-height: 28px;
    background-color: #fff4ec;
    margin: 6px 0;
  }
}
</style>